Tähtede mustrite tutvustus Java-s

Selles dokumendis näeme esiteks, kuidas kasutada Java programmeerimist Star musterprogrammidega töötamiseks. Tärnimustrid on üks levinumaid Java mustriprogramme, mida kasutatakse laialdaselt loogilise mõtlemise ja voo juhtimise teadmiste parandamiseks. Tärnimustrite kuvamiseks Java programmeerimises peate kasutama kahte või kolme silmust (sõltuvalt programmidest). Esimene silmus on välimine silmus ja teine ​​silmus on sisemine silmus, mis näitab vastavalt ridu ja veerge.

Neile Java-programmeerijatele, kes soovivad teada kujundusmustritest kui viisist oma objektorienteeritud kujundus- ja arendusvõimekuse parandamiseks, on see dokument kasulik.

Tähemustrite näited

Arutleme mõne näite üle, et java mustrite kontseptsioonist hõlpsasti aru saada.

Näide 1

import java.util.Scanner;
public class FirstPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = 1; n <= m; n++)
(
System.out.print("*");
)
System.out.println();
)
)
)

Väljund:

Näide 2

import java.util.Scanner;
public class SecondPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = myrows; n > m; n--)
(
System.out.print("*");
)
System.out.println();
)
)
)

Väljund:

Näide 3

import java.util.Scanner;
public class ThirdPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = 1; n < m; n++)
(
System.out.print(" ");
)
for (int p=myrows; p>=m; p--)
(
System.out.print("*");
)
System.out.println();
)
)
)

Väljund:

Näide 4

import java.util.Scanner;
public class FourthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n=myrows; n>m; n--)
(
System.out.print(" ");
)
for (int p=1; p<=(m * 2) -1; p++)
(
System.out.print("*");
)
System.out.println();
)
)
)

Väljund:

Näide 5

import java.util.Scanner;
public class FifthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m=myrows; m>=1; m--)
(
for (int n=1; n<=(m * 2) -1; n++)
(
System.out.print("*");
)
System.out.println();
for (int p=myrows; p>=m; p--)
(
System.out.print(" ");
)
)
)
)

Väljund:

Näide 6

import java.util.Scanner;
public class SixthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m=1; m<=myrows; m++)
(
for (int n=myrows; n>m; n--)
(
System.out.print(" ");
)
for (int p=1; p<=(m * 2) -1; p++)
(
System.out.print("*");
)
System.out.println();
)
for (int m=myrows-1; m>=1; m--)
(
for (int n=myrows-1; n>=m; n--)
(
System.out.print(" ");
)
for (int p=1; p<=(m * 2) -1; p++)
(
System.out.print("*");
)
System.out.println();
)
)
)

Väljund:

Näide 7

import java.util.Scanner;
public class SeventhPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n=1; n<=m; n++)
(
if( n == 1 || n == m || m == myrows)
System.out.print("*");
else
System.out.print(" ");
)
System.out.println();
)
)
)

Väljund:

Näide 8

import java.util.Scanner;
public class EighthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = myrows; m >= 1; m--)
(
for (int n = m; n >= 1; n--)
(
System.out.print("*");
)
System.out.println();
)
for (int m = 2; m <= myrows; m++)
(
for (int n = m; n >= 1; n--)
(
System.out.print("*");
)
System.out.println();
)
)
)

Väljund:

Näide 9

import java.util.Scanner;
public class NinthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = myrows-1; n>=m; n--)
(
System.out.print(" ");
)
for (int p = 1; p <= myrows; p++)
(
System.out.print("*");
)
System.out.println();
)
)
)

Väljund:

Näide 10

import java.util.Scanner;
public class TenthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = 1; n < m; n++)
(
System.out.print(" ");
)
for (int p = m; p <= myrows; p++)
(
System.out.print("* ");
)
System.out.println();
)
for (int m = myrows-1; m >= 1; m--)
(
for (int n = 1; n < m; n++)
(
System.out.print(" ");
)
for (int p = m; p <= myrows; p++)
(
System.out.print("* ");
)
System.out.println();
)
)
)

Väljund:

Näide 11

import java.util.Scanner;
public class ElevenPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m=myrows; m>=1; m--)
(
for (int n=1; n <=(m * 2) -1; n++)
(
if( n == 1 || n == (m * 2) -1 || m == myrows)
System.out.print("*");
else
System.out.print(" ");
)
System.out.println();
for (int p = myrows; p >= m; p--)
(
System.out.print(" ");
)
)
)
)

Väljund:

Näide 12

import java.util.Scanner;
public class TwelthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = 1; n <= myrows; n++)
(
System.out.print("*");
)
System.out.println();
)
)
)

Väljund:

Järeldus

Siiani oleme arutanud Java programmeerimiskeele eri tüüpi mustreid. Need mustrid on parimad tavad, mida tarkvara kogenud objektorienteeritud disainerid kasutavad. Kasutajad saavad neid kujundusmustreid kasutada objektorienteeritud tarkvara kujundamise aruteluks. Nende mustrite abil said kogenematud arendajad tarkvara kujundamist lihtsal ja kiirel viisil õppida.

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